PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

53645O-Ring

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5331-00-399-1002 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-399-1002 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-399-1002. Primary manufacturer part number: 53645.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER SYNTHETIC
  • Cross-Sectional Height: 0.250 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-399-1002, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-399-1002
Primary Part Number53645
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusACTIVE
MaterialRUBBER SYNTHETIC
Cross-Sectional Height0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5365-00-081-78685364-5 INTERCHANGEABLE
Shim
Goodrich Aerospace Canada Ltd
5820-00-521-1400SM-B-157524-5 INTERCHANGEABLE
Coder Disk Segment
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4730-01-205-723353645 INTERCHANGEABLE
Adapter
Hydro-Test Products, Inc. Dba Hydro-Test Products Inc
6840-01-584-8598 INTERCHANGEABLE
Insect Repellent,personal Applic
Cross-Reference Index
Part NumberManufacturer
53645 PRIMARY Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
Related Parts
5365-00-081-7868INTERCHANGEABLE
SHIM
5364-5
5820-00-521-1400INTERCHANGEABLE
CODER DISK SEGMENT
SM-B-157524-5
4730-01-205-7233INTERCHANGEABLE
ADAPTER
53645
6840-01-584-8598INTERCHANGEABLE
INSECT REPELLENT,PERSONAL APPLIC

Frequently Asked Questions

What is NSN 5331-00-399-1002?

NSN 5331-00-399-1002 is a O-Ring, manufactured by Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-399-1002?

NSN 5331-00-399-1002 has 1 cross-referenced part number: 53645 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.).

What NSN replaces 5331-00-399-1002?

There are 4 known substitutes for 5331-00-399-1002: 5365-00-081-7868, 5820-00-521-1400, 4730-01-205-7233 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 53645?

Key specifications for 53645: Material: RUBBER SYNTHETIC; Cross-Sectional Height: 0.250 INCHES NOMINAL IN. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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